Tuesday, September 19, 2006
Exchange Server Mailbox Store does not mount when the Mailbox Store database reaches the 16-GB limit
When the mailbox store database in Microsoft Exchange Server 2003 Standard Edition or Microsoft Exchange 2000 Server Standard Edition reaches the 16-gigabyte (GB) size limit, the mailbox store does not mount. Additionally, the following event ID messages may be logged in the application event log:
Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 1112
Description: The database "Mailbox Store (Server Name)" has reached the maximum allowed size. Attempting to unmount the database.
Event Type: Warning
Event Source: ESE
Event Category: Space Management
Event ID: 445
Description: Information Store (3160) The database D:\Program Files\Exchsrvr\MDBDATA\priv1.edb has reached its maximum size of 16383 MB. If the database cannot be restarted, an offline defragmentation may be performed to reduce its size.
Note Although the description for event ID 445 states that the Priv1.edb file has reached a size of 16,383 megabytes (MB), this may not be true. Event ID 445 is triggered if the combined size of the Priv1.edb file and the Priv1.stm file reaches 16,383 MB. The Priv1.edb file by itself may be smaller than 16,383 MB.
RESOLUTION
To resolve this issue, new functionality has been added to Exchange 2000 Standard Edition that allows an administrator to:
• Temporarily increase the database size limit by 1 GB.
• Selectively remove unnecessary database content.
• Defragment the database to reduce the database to a level that is in the defined boundaries of the database size.
In Exchange 2003, the functionality to temporarily increase the database size limit by 1 GB is built into the product. However, to enable this functionality, the administrator must create the new registry value that is mentioned in step 1 of the procedure in this article.
To resolve this issue in Exchange 2000, you can apply the September 2003 Exchange 2000 Server Post-Service Pack 3 Rollup. This update requires that you install Exchange 2000 Service Pack (SP3) and install the 813051 update on your server. Then the administrator must create the new registry value to enable this feature.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824282 (http://support.microsoft.com/kb/824282/) September 2003 Exchange 2000 Server Post-Service Pack 3 Rollup
After you make the registry change that is described in the following procedure, you can temporarily mount a mailbox store that exceeds the 16-GB limit. This is only a temporary solution. The next time that the Exchange services are started, the size limit reverts to 16 GB. You must reduce the size of your database before the size limit reverts to 16 GB. To reduce the size of your database:
1. Remove database content.
2. Let online maintenance run against the database.
3. Run an offline defragmentation of the database.
To reduce the size of your database, follow these steps:
Warning: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
Note The registry value in this procedure is designed to be used to temporarily increase the size limit of the mailbox store database. It is not to be used in day-to-day operations.
1. Add the Temporary DB Size Limit Extension registry entry to the computer that is running Exchange 2003 Standard Edition or Exchange 2000 Standard Edition: a. Open Registry Editor. To do this, click Start, click Run, type regedit in the Open box, and then click OK.
b. Locate the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\\Private-
c. On the Edit menu, point to New, and then click DWORD Value.
d. Type Temporary DB Size Limit Extension, and then press ENTER.
e. Double-click Temporary DB Size Limit Extension.
f. Type 1 in the Value data box, click Decimal in the Base box, and then click
OK.
g. Close Registry Editor.
2. To prevent new e-mail content from being added to the mailbox store beyond the temporary 17-GB limit during the recovery process, Microsoft strongly recommends that you stop the Simple Mail Transfer Protocol (SMTP) service and the Microsoft Exchange MTA Stacks service (if it is running) before you mount the mailbox store.
3. Mount your mailbox store.
4. Remove data from your mailbox store. To do this, use any of these methods: • Use Microsoft Outlook to delete unnecessary e-mail items from individual inboxes and other folders.
• Use Outlook to delete unnecessary e-mail items from the Sent Items folder.
• Use Outlook to empty the Deleted Items folder.
• If deleted item retention is set, you may want to temporarily reduce retention to zero (0) days: a. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
b. Right-click Mailbox Store, and then click Properties.
c. Click the Limits tab, and then type 0 in the Keep deleted items for days box.
• Delete mailboxes that are no longer used.
• Use the Move Mailbox tool to move mailboxes to a mailbox store that is on another Exchange server.
• Have users create personal folder (.pst) files on their local hard drives and then archive content from the mailbox store database to their local hard drives.
5. After you remove data from your mailbox store, you must let online maintenance run so that items are marked for permanent deletion before you run an offline defragmentation.
Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 1112
Description: The database "Mailbox Store (Server Name)" has reached the maximum allowed size. Attempting to unmount the database.
Event Type: Warning
Event Source: ESE
Event Category: Space Management
Event ID: 445
Description: Information Store (3160) The database D:\Program Files\Exchsrvr\MDBDATA\priv1.edb has reached its maximum size of 16383 MB. If the database cannot be restarted, an offline defragmentation may be performed to reduce its size.
Note Although the description for event ID 445 states that the Priv1.edb file has reached a size of 16,383 megabytes (MB), this may not be true. Event ID 445 is triggered if the combined size of the Priv1.edb file and the Priv1.stm file reaches 16,383 MB. The Priv1.edb file by itself may be smaller than 16,383 MB.
RESOLUTION
To resolve this issue, new functionality has been added to Exchange 2000 Standard Edition that allows an administrator to:
• Temporarily increase the database size limit by 1 GB.
• Selectively remove unnecessary database content.
• Defragment the database to reduce the database to a level that is in the defined boundaries of the database size.
In Exchange 2003, the functionality to temporarily increase the database size limit by 1 GB is built into the product. However, to enable this functionality, the administrator must create the new registry value that is mentioned in step 1 of the procedure in this article.
To resolve this issue in Exchange 2000, you can apply the September 2003 Exchange 2000 Server Post-Service Pack 3 Rollup. This update requires that you install Exchange 2000 Service Pack (SP3) and install the 813051 update on your server. Then the administrator must create the new registry value to enable this feature.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824282 (http://support.microsoft.com/kb/824282/) September 2003 Exchange 2000 Server Post-Service Pack 3 Rollup
After you make the registry change that is described in the following procedure, you can temporarily mount a mailbox store that exceeds the 16-GB limit. This is only a temporary solution. The next time that the Exchange services are started, the size limit reverts to 16 GB. You must reduce the size of your database before the size limit reverts to 16 GB. To reduce the size of your database:
1. Remove database content.
2. Let online maintenance run against the database.
3. Run an offline defragmentation of the database.
To reduce the size of your database, follow these steps:
Warning: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
Note The registry value in this procedure is designed to be used to temporarily increase the size limit of the mailbox store database. It is not to be used in day-to-day operations.
1. Add the Temporary DB Size Limit Extension registry entry to the computer that is running Exchange 2003 Standard Edition or Exchange 2000 Standard Edition: a. Open Registry Editor. To do this, click Start, click Run, type regedit in the Open box, and then click OK.
b. Locate the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\
c. On the Edit menu, point to New, and then click DWORD Value.
d. Type Temporary DB Size Limit Extension, and then press ENTER.
e. Double-click Temporary DB Size Limit Extension.
f. Type 1 in the Value data box, click Decimal in the Base box, and then click
OK.
g. Close Registry Editor.
2. To prevent new e-mail content from being added to the mailbox store beyond the temporary 17-GB limit during the recovery process, Microsoft strongly recommends that you stop the Simple Mail Transfer Protocol (SMTP) service and the Microsoft Exchange MTA Stacks service (if it is running) before you mount the mailbox store.
3. Mount your mailbox store.
4. Remove data from your mailbox store. To do this, use any of these methods: • Use Microsoft Outlook to delete unnecessary e-mail items from individual inboxes and other folders.
• Use Outlook to delete unnecessary e-mail items from the Sent Items folder.
• Use Outlook to empty the Deleted Items folder.
• If deleted item retention is set, you may want to temporarily reduce retention to zero (0) days: a. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
b. Right-click Mailbox Store, and then click Properties.
c. Click the Limits tab, and then type 0 in the Keep deleted items for days box.
• Delete mailboxes that are no longer used.
• Use the Move Mailbox tool to move mailboxes to a mailbox store that is on another Exchange server.
• Have users create personal folder (.pst) files on their local hard drives and then archive content from the mailbox store database to their local hard drives.
5. After you remove data from your mailbox store, you must let online maintenance run so that items are marked for permanent deletion before you run an offline defragmentation.
# posted by Tech Mania @ 4:37 AM 
